Kuroda & Itô, 1961: synonym of Conus lischkeanus Weinkauff, 1875 Conus olangoensis Poppe & Tagaro, 2017: synonym of Conasprella olangoensis (Poppe & Tagaro, 2017) Conus oleiniki (Petuch, 2013): synonym of Conasprella jaspidea (Gmelin, 1791) Conus olgae Bacallado, Espinosa & Ortea, 2007: synonym of Conus havanensis Aguayo & Pérez Farfante, 1947 Conus olgiatii Bozzetti, 2007: synonym of Conus balteatus G. B. Sowerby I, 1833 Conus olivaceus Salis Marschlins, 1793: synonym of Conus ventricosus Gmelin, 1791 Conus olivaceus Kiener, 1850: synonym of Conus ventricosus Gmelin, 1791 Conus oltmansianus van Lennep, 1876: synonym of Conus gradatulus Weinkauff, 1875 Conus omaicus Hwass in Bruguière, 1792: synonym of Conus thomae Gmelin, 1791 Conus omanensis Moolenbeek & Coomans, 1993: synonym of Conus biraghii omanensis Moolenbeek & Coomans, 1993: synonym of Conasprella biraghii omanensis (Moolenbeek & Coomans, 1993) Conus optimus G. B. Sowerby III, 1913: synonym of Conus exiguus Lamarck, 1810 Conus orbignyi Audouin, 1831: synonym of Conasprella orbignyi (Audouin, 1831) Conus orbitatus Reeve, 1843: synonym of Conus sulcatus Hwass in Bruguière, 1792 Conus ornatus G. B. Sowerby I, 1833: synonym of Conus magellanicus Hwass in Bruguière, 1792 Conus orri Ninomiya & da Motta, 1982: synonym of Conus mercator Linnaeus, 1758 Conus otohimeae Kuroda & Itô, 1961: synonym of Conasprella otohimeae (Kuroda & Itô, 1961) Conus pacei Petuch, 1987: synonym of Conasprella pacei (Petuch, 1987) Conus pacificus Moolenbeek & Röckel, 1996: synonym of Profundiconus pacificus (Moolenbeek & Röckel, 1996) Conus padarosae (Cossignani & Fiadeiro, 2018): synonym of Conus antoniaensis (Cossignani & Fiadeiro, 2014) Conus pagodus Kiener, 1845: synonym of Conasprella pagoda (Kiener, 1845) Conus pallans Nardo, 1847: synonym of Conus ventricosus Gmelin, 1791 Conus panniculus Lamarck, 1810: synonym of Conus textile Linnaeus, 1758 Conus papalis Weinkauff, 1875: synonym of Mitromorpha papalis (Weinkauff, 1875) Conus papilionaceus Hwass in Bruguière, 1792: synonym of Conus pulcher [Lightfoot], 1786 Conus papillaris A. Adams & Reeve, 1848: synonym of Conus gradatulus Weinkauff, 1875 Conus papillaris Reeve, 1849: synonym of Conus gradatulus Weinkauff, 1875 Conus papillaris G. B. Sowerby I, 1833: synonym of Conus pulcher [Lightfoot], 1786 Conus papillosus Kiener, 1847: synonym of Conasprella puncticulata (Hwass in Bruguière, 1792) Conus paradiseus Shikama, 1977: synonym of Conus barthelemyi Bernardi, 1861 Conus pardus Link, 1807: synonym of Conus leopardus (Röding, 1798) Conus particolor Perry, 1810: synonym of Conus aulicus Linnaeus, 1758 Conus parvus Pease, 1868: synonym of Lovellona peaseana Finlay, 1927 Conus parvus Gebauer, 1802: synonym of Conus coronatus Gmelin, 1791 Conus pastinaca Lamarck, 1810: